Headline Numbers

As of the latest CDC data release on August 24, 2020 there are:

37,446 new cases
- The state with the most cases is CA with 7,825
  - The county with the most cases is Riverside County in CA with 1,262 new cases
- The record number of national cases per day is 80,444 on July 16, 2020
445 new deaths
- The record number of deaths per day is 3,153 on April 14, 2020

Where I live, in Somerville, MA, as of August 24, 2020 there are:

4 new cases
55 cases in the last two weeks
- Out of 1,193 cases overall
  - 37 Fatalities and
  - 1091 Recoveries

Where my grandparents live, in Collier County, FL, as of August 24, 2020 there are:

23 new cases
934 cases in the last two weeks
- For a more detailed report, see http://ww11.doh.state.fl.us/comm/_partners/covid19_report_archive/state_reports_latest.pdf

Consequently, in the United States, there are now:

5,690,346 total cases
175,624 total deaths

Globally, as of the latest WHO data release on August 26, 2020, there are:

18,667,145 total cases
- 178,930 today
576,609 total deaths
- 3,946 today

Overall Covid Cases In The USA

Regions are defined as follows: Northeast (CT, ME, MA, NH, RI, VT, NJ, NY, PA), Midwest (IN, IL, MI, OH, WI, IA, KS, MN, MO, NE, ND, SD), South (AL, AR, DC, DE, FL, GA, KY, LA, MD, MS, NC, OK, SC, TN, TX, VA, WV) and West (AZ, CO, ID, NM, MT, UT, NV, WY, AK, CA, HI, OR, WA). The red line denotes the date that Health and Human Services (HHS) took over the production of data from the Center for Disease Control (CDC) on July 20, 2020.¹

US Cases Compared to World Cases

World Case Maps: Total Cases and Cases per Capita

Covid Cases in Somerville, MA and MA

Latest Cases in Boston Area (Today, One Week Ago, Two Weeks Ago)

Date	County Name	Cases	Deaths	New Cases	New Deaths
August 24, 2020	Middlesex County	27158	2053	102	10
August 17, 2020	Middlesex County	26565	2006	0	0
August 10, 2020	Middlesex County	26470	2005	50	2
August 24, 2020	Norfolk County	10885	1005	40	1
August 17, 2020	Norfolk County	10682	997	0	0
August 10, 2020	Norfolk County	10639	997	25	0
August 24, 2020	Suffolk County	22904	1095	198	2
August 17, 2020	Suffolk County	22017	1076	0	0
August 10, 2020	Suffolk County	21929	1074	80	0

New Covid Cases By State

The plot below shows the number of new COVID cases by state. Note that each figure has its own y axis; this is done so that trends can be seen within each state. Log scales can make the difference between 100 and 1000 cases hard to discern and a common y axis causes states like NY and CA to swamp states like NC. Negative new cases can occur when States revise their total number of cases downwards, as Hawaii did between June 30, 2020 and July 1, 2020.

COVID Cases per 1,000 Residents by State

This figure shows the number of COVID cases per 1,000.

Latest County Case Map

Latest County Death Map

Counties with the Most Cases Over Time

Date	State	County Name	Cases	Deaths
2020-08-24	CA	Los Angeles County	232893	5558
2020-08-24	FL	Miami-Dade County	152612	2253
2020-08-24	AZ	Maricopa County	131962	2790
2020-08-24	IL	Cook County	121877	5015
2020-08-24	TX	Harris County	98506	2030
2020-08-01	CA	Los Angeles County	190693	4669
2020-08-01	FL	Miami-Dade County	121207	1647
2020-08-01	AZ	Maricopa County	119295	2089
2020-08-01	IL	Cook County	106131	4888
2020-08-01	TX	Harris County	72964	1288
2020-07-01	CA	Los Angeles County	105507	3402
2020-07-01	IL	Cook County	90911	4581
2020-07-01	NY	Queens County	65455	7059
2020-07-01	NY	Kings County	59742	7104
2020-07-01	AZ	Maricopa County	52266	817
2020-06-01	IL	Cook County	78495	3658
2020-06-01	NY	Queens County	62094	6271
2020-06-01	NY	Kings County	56053	6742
2020-06-01	CA	Los Angeles County	55968	2362
2020-06-01	NY	Bronx County	45359	4480

Hospitalizations By State

Patients Currently in the ICU

Patients Currently on Ventilators

Cumulative Cases by County in the Northeast

Cumulative Cases by State Over Time

Cumulative Deaths by State Over Time

Daily Percent Positive Cases

According to the WHO the positive rate should be below 5%.² Days above the threshold are denoted in red, days below are in blue. Note that the variables currently used for these plots –positiveIncrease and negativeIncrease– are being phased out and will be replaced by positiveCasesViral and negativeCasesViral. Each dot represents the rolling average of tests within the previous week (this approach smoothes out trends such as fewer cases being reported on weekends).

Partisanship and COVID Cases

Variants of Select Figures

Week to Week Changes in COVID Cases

Confirmed Cases as a Percentage of State Population

The two sets of points are confirmed cases (black), and potential cases (grey) which are confirmed cases times ten. For herd immunity, typically 70-90% of a population needs immunity.³

Data Sources

Data for this report comes from:

The CDC Homepage https://www.cdc.gov/covid-data-tracker/index.html#county-map and https://usafacts.org/visualizations/coronavirus-covid-19-spread-map/, specifically:
- Confirmed COVID Cases https://usafactsstatic.blob.core.windows.net/public/data/covid-19/covid_confirmed_usafacts.csv
- Covid Deaths https://usafactsstatic.blob.core.windows.net/public/data/covid-19/covid_deaths_usafacts.csv
- County Population https://usafactsstatic.blob.core.windows.net/public/data/covid-19/covid_county_population_usafacts.csv
Covidtracker.com data (used by Johns Hopkins https://coronavirus.jhu.edu/us-map) https://covidtracking.com/api/v1/states/daily.csv
World Health Organization https://covid19.who.int/
Somerville City data https://somerville-dashboardcovid.trial.opendatasoft.com/pages/citysdashboard/

Different Counts from Different Data

See the difference between https://covidtracking.com/api/v1/states/daily.csv and https://usafacts.org/visualizations/coronavirus-covid-19-spread-map/

Covid Figures and Maps

Steven Rashin

August 26, 2020